With a .63 focal reducer, I have used 105mm back focus with my ZWO533 and it has worked great. I added an EFW last night using the same 105mm back focus to the camera censor but I could not get my telescope to polar align because it couldn't plate solve. I had focused before trying to PA but couldn't get anything to work properly after that. I would really appreciate some guidance. Any tricks on how to use the EFW would be appreciated as well. I have the Optolong L Ultimate filter in position one and will work up to the other filters as I can afford.
Thank you in advance!
